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Finding the Fourth Proportional to 484.34, 726.28 and 187.99

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Solution

The fourth proportional to 484.34, 726.28 and 187.99 is: 281.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.34 : 726.28 = 187.99 : x
  2. Step 2: Convert to fraction form
    484.34/726.28 = 187.99/x
  3. Step 3: Cross multiply
    484.34x = 726.28 × 187.99
  4. Step 4: Simplify right side
    484.34x = 136,528.81
  5. Step 5: Solve for x
    x = 136,528.81/484.34
  6. Step 6: Final answer
    x = 281.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.